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1500 questions
2432
votes
7 answers
How do I make a POST request using curl?
How do I make a POST request using cURL's command-line tool?
Laurie Young
2155
votes
3 answers
Why does Windows think that my wireless keyboard is a toaster?
I've inherited an old PC from my girlfriend's dad and when setting up the printer I got a bit of a surprise:
Two questions spring to mind here:
Why does Windows think my wireless keyboard is a toaster?
Why does Windows even have an icon for a…
ydaetskcoR
- 11,893
2062
votes
15 answers
How do I scroll in tmux?
How do I scroll with either the keyboard or mouse? The tmux man page indicates one must enter copy-mode to scroll. Is there a way to quickly scroll without manually entering copy-mode?
chadoh
- 20,789
- 3
- 18
- 9
1775
votes
10 answers
How can I sort the output of 'ls' by last modified date?
How can I sort the output of ls by last modified date?
nearly_lunchtime
1582
votes
6 answers
How do I make a machine "blank screen" for a period of time (as a penalty) if certain noise levels are reached?
My kids (4 and 5) yell a lot when playing games on the computer. I found an effective cure for this. When I hear loud noises, I ssh into the game computer and do:
chvt 3; sleep 15; chvt 7
This will turn off the screen for 15 seconds on Linux.…
Leonid Volnitsky
- 8,543
1508
votes
19 answers
Getting curl to output HTTP status code?
I'm using curl at the command line on Linux to issue HTTP requests. The response bodies are printed to standard out, which is fine, but I can't see from the man page how to get curl to print the HTTP status code from the response (404, 403 etc). …
kdt
- 15,867
1322
votes
16 answers
Find out which process is locking a file or folder in Windows
How can I find out which process is locking a file or folder in Windows?
For instance, when trying to delete a folder, Windows reports this:
The action can't be completed because the folder is open in another program
It also happens with…
leeand00
- 23,552
1179
votes
25 answers
How to tell git which private key to use?
ssh has the -i option to tell which private key file to use when authenticating:
-i identity_fileSelects a file from which
the identity (private key) for RSA or DSA authentication is read.
The default is ~/.ssh/identity for protocol…
jrdioko
- 13,195
1076
votes
17 answers
How to clear/flush the DNS cache in Google Chrome?
As you probably know Google Chrome has its own internal DNS cache. Is there a way to clear it without having to wait for the time out or close the browser?
Mee
- 10,898
1006
votes
20 answers
What are the Windows A: and B: drives used for?
In Windows you have a C-drive. Everything labeled beyond that is with the following letter.
So your second drive is D, your DVD is E and if you put in a USB stick it becomes F and the following drive G. And so on and so forth.
But then, what and…
Demian Kasier
- 461
866
votes
3 answers
Transatlantic ping faster than sending a pixel to the screen?
John Carmack tweeted,
I can send an IP packet to Europe faster than I can send a pixel to the screen. How f’d up is that?
And if this weren’t John Carmack, I’d file it under “the interwebs being silly”.
But this is John Carmack.
How can this be…
Konrad Rudolph
- 7,678
829
votes
13 answers
What does 'source' do?
$ whatis source
source: nothing appropriate.
$ man source
No manual entry for source
$ source
bash: source: filename argument required
source: usage: source filename [arguments]
It exists, and it is runnable. Why isn't there any documentation about…
Andrea Ambu
- 8,958
827
votes
8 answers
How can I display the contents of an environment variable from the command prompt in Windows 7?
In Windows 7, when I start the Command prompt, is there any command to display the contents of an environment variable (such as the JAVA_HOME or PATH variables)?
I have tried with echo $PATH, echo PATH and $PATH but none of these work.
Jonas
- 28,660
807
votes
31 answers
Is there a built-in checksum utility on Windows 7?
Is there a built-in checksum/hash utility on Windows 7?
user64996
- 8,427
- 5
- 21
- 16
794
votes
10 answers
How to recursively chmod all directories except files?
How to chmod 755 all directories but not files (recursively)?
Inversely, how to chmod only files (recursively) but no directories?
Olivier Lalonde
- 10,557